What's one of the worst messes your child has made? Please share a link to a photo if you have one.

Well, my daughter, a teen, was helping me do the laundry and left the Costco sized, almost full to the brim, Tide liquid detergent on the washing machine when she was done. The machine jiggled the jug off and it split open when it hit the the tiled floor. It was a blue flood that seeped under the door, down the stairs and even through the ceiling as our laundry room is on the second floor! It took us FOREVER to clean it up, but at least it smelled nice. ;)